JPH11247078A - Automotive operational wire and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an automotive operational wire rope intended to actuate the various functions of an automobile through power transmission by the operation of levers set up respective sections such as trunk open and bonnet open, by fusing a protective film therearound so as not to abrade the surrounding protective cylinder. SOLUTION: This automotive operational wire rope is so designed that the outer circumference thereof is fusingly coated with a protective film of a synthetic resin composition comprising a base material of a low-viscosity and highly fluid olefin-based resin with low frictional resistance and an additive of olefin-based resin powder or particles lower in viscosity and higher in fluidity than the base material and the surface of the protective film is provided with numerous uneven rough spots through heating, wherein it is characteristic that an intermediate layer of a flexible synthetic resin is fusingly interposed between this wire rope and the protective film. This wire rope is produced by the following process: in a mold die, a wire rope is first fused with the above intermediate layer in 1st extrusion molding machine and then the outer periphery of the intermediate layer is fusingly coated with the above synthetic resin composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever for a vehicle, for example, a trunk open, a bonnet open, a fuel open, a slot, a chiyoke, a brake, a mission, a wind regulator and the like. The present invention relates to an operation wire for an automobile, which performs index operation by being connected to a vehicle and transmits an operation of force and displacement, and a method of manufacturing the same.

[0002]

2. Description of the Related Art As shown in FIG. 6, an operating wire inserted into a protective cylinder on the outer periphery provided for various functions of a car or the like of this type conventionally has a single steel wire from a thread such as a metal wire. Form the material. The operation wire has a problem in that the interior of the protective cylinder is worn and damaged by repeated sliding operations such as pulling and pushing, and becomes unusable.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems.
A protective film is fused to the outer periphery of the wire rope so that the operation wire does not wear the outer protective cylinder. The constituent material of this protective film was obtained by mixing a low-viscosity, high-flowability olefin-based resin base material having a low frictional resistance and an olefin-based resin powder or particle additive having a higher viscosity and low-flowability than the base material. The present invention relates to an operation wire and a method for manufacturing the same, wherein a rough surface portion having unevenness due to heat is provided on the surface to prevent abrasion and damage due to contact of each portion.

[0004]

In order to achieve the above object, in the present invention, the operating wire has a wire rope having a core formed by twisting a thread made of a fiber such as metal or polyester. A mixed synthetic resin obtained by mixing a low-viscosity, high-flowability olefin-based resin base material having a low frictional resistance with an outer periphery of an olefin-based resin powder or particles having a higher viscosity and a low-flowability than the base material Thus, the protective film is fused, and a rough surface portion having unevenness due to heat is formed on the outer periphery thereof to prevent abrasion. In addition, while forming an intermediate layer between the wire rope and the protective film using an olefin-based resin of a soft synthetic resin to increase flexibility,
The manufacturing method.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 shows an example of a use state in which the operation wire (1) of the present invention is inserted through the outer protective cylinder (8). The operation wire (1) has various functions for an automobile. For example, it is inserted into a protective cylinder (8) for operating a trunk open, a bonnet open, a fuel open, a slottle, a chiyoke, a brake, a mission, a wind regulator, etc. In addition, the indexing operation of the operating wire (1) reduces and protects the inner peripheral surface of the protection cylinder (8).

Next, the operation wire (1) shown in FIGS. 2 and 4 is provided with a wire rope (2) made of a thread such as metal, fiber, carbon fiber, polyester fiber or the like as a core. The wire rope (2) is based on an olefin resin having a low friction resistance and a low viscosity and a high fluidity as a base material, and a powder of an olefin resin having a higher viscosity and a lower fluidity than the base material. The protective film (3) is fused and adhered with a mixed synthetic resin obtained by mixing the additive materials (4) and (4) composed of particles. The protective film (3) has a large number of rough surface portions (5) (5) having irregularities due to heat during molding on the outer peripheral surface.
Is formed to protrude.

FIGS. 3 and 5 show another embodiment, in which a soft wire is provided between a wire rope (2) at the center of the operation wire (1) and a protective film (3) on the outer periphery thereof. An intermediate layer (6) of a synthetic resin, an olefin-based resin, is integrally fused. On the outer periphery of the intermediate layer (6), a low-viscosity and high-fluidity base material having a low frictional resistance of the same olefin-based resin as described above, an olefin-based resin powder having a higher viscosity and a lower viscosity than the base material, The protective film (3) is bonded by using a mixed synthetic resin in which an additive composed of particles is mixed.
The protective film (3) is formed with a large number of rough surface portions (5) (5)... Formed by heat on the outer peripheral surface.

Next, an embodiment shown in FIG. 7 explains a method for manufacturing the operation wire (1) of the present invention. The traveling wire rope (2) is the die (1)
During the passage inside 3), first the first extruder (1
The intermediate layer (6) is formed from the soft olefin-based resin injected into the inside of (1), and the intermediate layer (6) is fused and attached to the wire rope (2). Thereafter, an olefin resin having a low frictional resistance and a low viscosity and a high fluidity injected into the second extruder (12) is used as a base material with respect to the outer periphery of the intermediate layer (6). A protective film (3) is formed on the outer periphery of the intermediate layer (6) using a mixed synthetic resin obtained by mixing additives (4) and (4) of powder or particles of an olefin resin having low viscosity and low fluidity. 3) The powder and particles of the additive having higher viscosity and lower fluidity than the base material are not fluidized as in the base material due to the difference in melting point due to heat and pressure when the powder and particles pass through the mold die (13). Extruded with the melt viscosity maintaining the original shape to some extent, and formed on the outer peripheral surface of the protective film (3) a number of rough surface portions (5) (5)... The operation wire (1) moves forward and the cooling water tank (1 ) In passing through the by fixed-length cutter (16) via take-off machine (15) is intended to be cut into a predetermined size,
Reference numeral (17) indicates a flow pipe of each extrusion molding machine.

Reference numeral (7) shown in FIG. 6 is a conventional operation wire, and (9) shown in FIG. 1 is a terminal located at the end of a protective cylinder (8) on the outer periphery of the operation wire (1). A bracket is shown, and (10) shows an operation lever provided at an end of the operation wire (1).

Next, powder and particles of various sizes of polyethylene resin having higher viscosity and lower fluidity than the base material, based on the low viscosity and high fluidity polyethylene resin of the constituent material used for the protective film of the present invention. The mixing ratio of the additives is 5 to 4
0%. Further, as a low-viscosity high-flow polyethylene base material, a melt flow rate of 0.5 g or more / 10 minutes (ASTM D1238 190 ° C.), addition of various powders and particles of high-viscosity low-flow polyethylene, As the material, the melt flow rate is 0.1 g or less / 10
(ASTM D1238 190 ° C.).

[0011]

Since the present invention is constructed as described above, according to the operation wire inserted inside the protective cylinder used for each functional part of the automobile, the outer peripheral protective cylinder can be used. On the other hand, since the frictional resistance of the contact portion that slides in the index direction is small, it is possible to easily prevent abrasion or breakage due to rubbing, and it is possible to operate the operation wire extremely smoothly and smoothly because the friction in the sliding operation of the operation wire is small. Then, as a constituent material of the protective film attached to the outer periphery of the wire rope, a low-friction, low-viscosity, high-flowability olefin-based resin is used as a base material of a low-friction, low-viscosity, low-flowability olefin-based resin. Since the protective film is adhered and bonded by the mixed synthetic resin in which the additive material of the powder or the particles is mixed, there is an effect that the inner wire rope is protected and the functions such as rust prevention and insulation are sufficiently performed. In addition, the high-viscosity, low-fluidity powder or particles can surely form a large number of rough surfaces on the outer peripheral surface of the protective film by heat and pressure, and the inner surface of the outer protective cylinder body by the rough surface portions. This has the effect of reducing the friction of the contact surface with the substrate and preventing breakage due to rubbing over a long period of time. Furthermore, the intermediate layer of the olefin resin of soft synthetic resin is melted and interposed between the wire rope as the core and the protective film, thereby preventing the operation wire itself from being bent unnecessarily and has a role of a buffering action. There is also an effect that damage can be prevented. And according to the manufacturing method of the operation wire for automobiles, the running wire rope has a lower frictional resistance than the second extruder with the intermediate layer of the soft synthetic resin from the first extruder when the die passes. Polyolefin resin as the base material is compatible with each other, so that it can be firmly and integrally bonded by heat fusion at the time of extrusion molding, and has low frictional resistance, low viscosity and high fluidity compared to the second extrusion molding machine Since the mixed synthetic resin which mixed the base material and the olefin resin powder or particle additive having higher viscosity and lower fluidity than the base material was used, the difference in melting due to the heat at the time of extrusion molding caused the difference in the outer peripheral surface. There is an effect that a large number of uneven surface portions can be easily and reliably formed. Further, since the thickness of the protective film can be freely adjusted and applied, there is an effect that a very convenient operation wire can be manufactured.

[Brief description of the drawings]

FIG. 1 is an overall front view showing a state in which an operation wire of the present invention is used.

FIG. 2 is a perspective view of the operation wire of the present invention.

FIG. 3 is a perspective view of the operation wire of the present invention.

FIG. 4 is a sectional view of the operation wire of the present invention.

FIG. 5 is a sectional view of the operation wire of the present invention.

FIG. 6 is a perspective view showing a conventional operation wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation wire 2 Wire rope 3 Protective film 4 Additive material 5 Rough surface part 6 Intermediate layer 7 Wire 8 Protective cylinder 10 Operation lever 11 1st extrusion molding machine 12 2nd extrusion molding machine 13 Die die 14 Cooling water tank 15 Pulling machine

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 13, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Next, an embodiment shown in FIG. 7 explains a method for manufacturing the operation wire (1) of the present invention. The traveling wire rope (2) is the die (1)
During the passage inside 3), first the first extruder (1
The intermediate layer (6) is formed from the soft olefin-based resin injected into the inside of (1), and the intermediate layer (6) is fused and attached to the wire rope (2). Thereafter, the outer periphery of the intermediate layer (6) is made of a low-viscosity, high-flowability olefin-based resin having a small frictional resistance and injected into the inside of the second extruder (12). A protective film (3) is formed on the outer periphery of the intermediate layer (6) using a mixed synthetic resin obtained by mixing additives (4) and (4) of powder or particles of olefin resin having low viscosity and low fluidity. The protective film (3) has a higher viscosity and a lower fluidity than the base material, and the powder and particles of the additive flow as the base material due to the difference in melt viscosity due to heat and pressure when passing through the die (13). somewhat pushed up balls to maintain the original shape without reduction, a number of irregularities of the rough surface portion to reduce the frictional resistance on the outer periphery surface of the protective film (3) (5) (5) to form a ..... Thereafter, the formed operation wire (1) advances, passes through the cooling water tank (14), passes through the take-off machine (15), and is cut into the fixed-size cutting machine (1).
According to 6), it is cut to a predetermined size. Sign (1
7) shows a flow pipe of each extrusion molding machine. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 28, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is an overall front view showing a state in which an operation wire of the present invention is used.

FIG. 2 is a perspective view of the operation wire of the present invention.

FIG. 3 is a perspective view of the operation wire of the present invention.

FIG. 4 is a sectional view of the operation wire of the present invention.

FIG. 5 is a sectional view of the operation wire of the present invention.

FIG. 6 is a perspective view showing a conventional operation wire.

FIG. 7 is an overall side view showing a manufacturing process of the operation wire according to the present invention, with a part thereof being omitted.

[Description of Signs] 1 Operation wire 2 Wire rope 3 Protective film 4 Additive material 5 Rough surface 6 Intermediate layer 7 Wire 8 Protective cylinder 10 Operation lever 11 First extrusion molding machine 12 Second extrusion molding machine 13 Mold die 14 Cooling Water tank 15 take-off machine

Claims (3)

[Claims] An operation wire main body (1) has a wire rope (2) made of metal, carbon fiber, polyester fiber or the like as a core, and the wire rope (2) has a small frictional resistance on the outer periphery. An olefin resin base material having a low viscosity and high fluidity, and a powder or particle additive of the olefin resin having a higher viscosity and a lower fluidity than the base material (4)
The protective film (3) is adhered and bonded by the mixed synthetic resin mixed with (4), and the protective film (3) has a large number of rough surfaces (5), (5), ... An operation wire for automobiles, characterized in that ... is formed in a protruding manner. 2. The wire rope (2) of the operation wire body (1) according to claim 1, wherein an intermediate layer (6) of an olefin-based resin of a soft synthetic resin is integrally fused and interposed on the outer periphery. 6) Mixing of olefin resin having low viscosity and high fluidity as a base material with low frictional resistance as the base material, and powder and particle additives of olefin resin having higher viscosity and lower fluidity than the base material. 2. The method according to claim 1, wherein said protective film made of resin is adhered and bonded, and rough surface portions having irregularities are formed on the outer periphery of said protective film.
Automotive wires. 3. The olefin resin intermediate layer (6) in the first extruder (11) is fused to the wire rope (2) while the traveling wire rope (2) passes through the die (13). After application, a second layer is applied to the outer periphery of the intermediate layer (6).
A low-viscosity, high-flowability olefin-based resin base material having a low frictional resistance in an extruder (12), and an olefin-based resin powder or particle additive (4) having a higher viscosity and a lower flowability than the base material A protective film (3) is formed using a mixed synthetic resin obtained by mixing (4) and (4), and the surface of the protective film (3) is roughened by the heat and pressure in the die (13). The method according to claim 2, wherein (5) is formed.